ul,li,body{
    padding: 0;
    margin: 0;
}
header{
    width: 330px;
    height: 100px;
    margin: 0 auto;
}
div.icon{
    width: 47px;
    height: 47px;
    background-image:url('i_head4.png');
   background-position: -20px -30px;
}
div.kb{
    width: 330px;
    height: 50px;
    background-image: url('1.png');
}
section{
    width: 330px;
    height: 800px;
    margin: 0 auto;
}
section.main ul li{
    display: inline-block;
    width: 32%;
    text-align: center;
    height: 48px;
    line-height: 48px;
}
section.main ul li a{
        color: #333;
       text-decoration: none;
        font-size: 18px;
    }
section.main ul li.active{
    border-bottom: 3px solid rgb(242,148,6);
}
ul.nav{
border-bottom: 2px solid #ccc;
}
section.main  span{
    display: block;
    font-size: 20px;
    background: white;
    border-left:solid 4px  rgb(242,148,6);
    margin-top: -13px;
    width: 250px;
    padding-left: 20px; 
}
section.main div.pics ul li::after{
    content: '';
    display: block;
    clear: both;
}
section.main div.pics ul li{
	width: 26%;
	float: left;
	position: relative;
	margin: 12px;
}
section.main div.pics ul li img{
    width: 100%;
}
section.main div.pics ul li span{
	position: absolute;
	bottom: -17px;
	left: -15px;
	display: block;
	width: 100%;
	height: 47px;
	line-height: 47px;
	font-size: 18px;
	color: white;
	background: rgba(0,0,0,0.5);
}
footer{
    margin: 0 auto;
    text-align: center;
}
section.main div p img{
    position: relative;
    margin: 5px;
	top:14px;
}